diff options
Diffstat (limited to 'dracut-init.sh')
-rwxr-xr-x | dracut-init.sh | 1155 |
1 files changed, 1155 insertions, 0 deletions
diff --git a/dracut-init.sh b/dracut-init.sh new file mode 100755 index 0000000..6b81833 --- /dev/null +++ b/dracut-init.sh @@ -0,0 +1,1155 @@ +#!/bin/bash +# +# functions used only by dracut and dracut modules +# +# Copyright 2005-2009 Red Hat, Inc. All rights reserved. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# +export LC_MESSAGES=C + +if [[ $EUID == "0" ]] && ! [[ $DRACUT_NO_XATTR ]]; then + export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,xattr,links -dfr" +else + export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,links -dfr" +fi + +# is_func <command> +# Check whether $1 is a function. +is_func() { + [[ "$(type -t "$1")" == "function" ]] +} + +if ! [[ $dracutbasedir ]]; then + dracutbasedir=${BASH_SOURCE[0]%/*} + [[ $dracutbasedir == dracut-functions* ]] && dracutbasedir="." + [[ $dracutbasedir ]] || dracutbasedir="." + dracutbasedir="$(readlink -f $dracutbasedir)" +fi + +if ! is_func dinfo > /dev/null 2>&1; then + # shellcheck source=./dracut-logger.sh + . "$dracutbasedir/dracut-logger.sh" + dlog_init +fi + +if ! [[ $initdir ]]; then + dfatal "initdir not set" + exit 1 +fi + +if ! [[ -d $initdir ]]; then + mkdir -p "$initdir" +fi + +if ! [[ $kernel ]]; then + kernel=$(uname -r) + export kernel +fi + +srcmods="$dracutsysrootdir/lib/modules/$kernel/" + +[[ $drivers_dir ]] && { + if ! command -v kmod &> /dev/null && vercmp "$(modprobe --version | cut -d' ' -f3)" lt 3.7; then + dfatal 'To use --kmoddir option module-init-tools >= 3.7 is required.' + exit 1 + fi + srcmods="$drivers_dir" +} +export srcmods + +# export standard hookdirs +[[ $hookdirs ]] || { + hookdirs="cmdline pre-udev pre-trigger netroot " + hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout " + hookdirs+="pre-mount pre-pivot cleanup mount " + hookdirs+="emergency shutdown-emergency pre-shutdown shutdown " + export hookdirs +} + +DRACUT_LDD=${DRACUT_LDD:-ldd} +DRACUT_TESTBIN=${DRACUT_TESTBIN:-/bin/sh} +DRACUT_LDCONFIG=${DRACUT_LDCONFIG:-ldconfig} + +# shellcheck source=./dracut-functions.sh +. "$dracutbasedir"/dracut-functions.sh + +# Detect lib paths +if ! [[ $libdirs ]]; then + if [[ $("$DRACUT_LDD" "$dracutsysrootdir$DRACUT_TESTBIN") == */lib64/* ]] &> /dev/null \ + && [[ -d $dracutsysrootdir/lib64 ]]; then + libdirs+=" /lib64" + [[ -d $dracutsysrootdir/usr/lib64 ]] && libdirs+=" /usr/lib64" + else + libdirs+=" /lib" + [[ -d $dracutsysrootdir/usr/lib ]] && libdirs+=" /usr/lib" + fi + + libdirs+=" $(ldconfig_paths)" + + export libdirs +fi + +# helper function for check() in module-setup.sh +# to check for required installed binaries +# issues a standardized warning message +require_binaries() { + local _module_name="${moddir##*/}" + local _ret=0 + + if [[ $1 == "-m" ]]; then + _module_name="$2" + shift 2 + fi + + for cmd in "$@"; do + if ! find_binary "$cmd" &> /dev/null; then + dinfo "Module '${_module_name#[0-9][0-9]}' will not be installed, because command '$cmd' could not be found!" + ((_ret++)) + fi + done + return "$_ret" +} + +require_any_binary() { + local _module_name="${moddir##*/}" + local _ret=1 + + if [[ $1 == "-m" ]]; then + _module_name="$2" + shift 2 + fi + + for cmd in "$@"; do + if find_binary "$cmd" &> /dev/null; then + _ret=0 + break + fi + done + + if ((_ret != 0)); then + dinfo "$_module_name: Could not find any command of '$*'!" + return 1 + fi + + return 0 +} + +# helper function for check() in module-setup.sh +# to check for required kernel modules +# issues a standardized warning message +require_kernel_modules() { + local _module_name="${moddir##*/}" + local _ret=0 + + # Ignore kernel module requirement for no-kernel build + [[ $no_kernel == yes ]] && return 0 + + if [[ $1 == "-m" ]]; then + _module_name="$2" + shift 2 + fi + + for mod in "$@"; do + if ! check_kernel_module "$mod" &> /dev/null; then + dinfo "Module '${_module_name#[0-9][0-9]}' will not be installed, because kernel module '$mod' is not available!" + ((_ret++)) + fi + done + return "$_ret" +} + +dracut_need_initqueue() { + : > "$initdir/lib/dracut/need-initqueue" +} + +dracut_module_included() { + [[ " $mods_to_load $modules_loaded " == *\ $*\ * ]] +} + +dracut_no_switch_root() { + : > "$initdir/lib/dracut/no-switch-root" +} + +dracut_module_path() { + local _dir + + # shellcheck disable=SC2231 + for _dir in "${dracutbasedir}"/modules.d/??${1}; do + echo "$_dir" + return 0 + done + return 1 +} + +if ! [[ $DRACUT_INSTALL ]]; then + DRACUT_INSTALL=$(find_binary dracut-install) +fi + +if ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/dracut-install ]]; then + DRACUT_INSTALL=$dracutbasedir/dracut-install +elif ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/src/install/dracut-install ]]; then + DRACUT_INSTALL=$dracutbasedir/src/install/dracut-install +fi + +# Test if dracut-install is a standalone executable with no options. +# E.g. DRACUT_INSTALL may be set externally as: +# DRACUT_INSTALL="valgrind dracut-install" +# or +# DRACUT_INSTALL="dracut-install --debug" +# in which case the string cannot be tested for being executable. +DRINSTALLPARTS=0 +for i in $DRACUT_INSTALL; do + DRINSTALLPARTS=$((DRINSTALLPARTS + 1)) +done + +if [[ $DRINSTALLPARTS == 1 ]] && ! command -v "$DRACUT_INSTALL" > /dev/null 2>&1; then + dfatal "dracut-install not found!" + exit 10 +fi + +if [[ $hostonly == "-h" ]]; then + if ! [[ $DRACUT_KERNEL_MODALIASES ]] || ! [[ -f $DRACUT_KERNEL_MODALIASES ]]; then + export DRACUT_KERNEL_MODALIASES="${DRACUT_TMPDIR}/modaliases" + $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${srcmods:+--kerneldir "$srcmods"} --modalias > "$DRACUT_KERNEL_MODALIASES" + fi +fi + +[[ $DRACUT_RESOLVE_LAZY ]] || export DRACUT_RESOLVE_DEPS=1 +inst_dir() { + local _ret + [[ -e ${initdir}/"$1" ]] && return 0 # already there + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} -d "$@"; then + return 0 + else + _ret=$? + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} -d "$@" + return $_ret + fi +} + +inst() { + local _ret _hostonly_install + if [[ $1 == "-H" ]]; then + _hostonly_install="-H" + shift + fi + [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then + return 0 + else + _ret=$? + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" + return $_ret + fi +} + +inst_simple() { + local _ret _hostonly_install + if [[ $1 == "-H" ]]; then + _hostonly_install="-H" + shift + fi + [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there + [[ -e $1 ]] || return 1 # no source + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@"; then + return 0 + else + _ret=$? + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@" + return $_ret + fi +} + +inst_symlink() { + local _ret _hostonly_install + if [[ $1 == "-H" ]]; then + _hostonly_install="-H" + shift + fi + [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there + [[ -L $1 ]] || return 1 + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then + return 0 + else + _ret=$? + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" + return $_ret + fi +} + +inst_multiple() { + local _ret _hostonly_install + if [[ $1 == "-H" ]]; then + _hostonly_install="-H" + shift + fi + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then + return 0 + else + _ret=$? + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" + return $_ret + fi +} + +dracut_install() { + inst_multiple "$@" +} + +dracut_instmods() { + local _ret _silent=0 + local i + [[ $no_kernel == yes ]] && return + for i in "$@"; do + [[ $i == "--silent" ]] && _silent=1 + done + + if $DRACUT_INSTALL \ + ${dracutsysrootdir:+-r "$dracutsysrootdir"} \ + ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@"; then + return 0 + else + _ret=$? + if ((_silent == 0)); then + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@" + fi + return $_ret + fi +} + +inst_library() { + local _ret _hostonly_install + if [[ $1 == "-H" ]]; then + _hostonly_install="-H" + shift + fi + [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there + [[ -e $1 ]] || return 1 # no source + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then + return 0 + else + _ret=$? + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" + return $_ret + fi +} + +inst_binary() { + local _ret + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"; then + return 0 + else + _ret=$? + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" + return $_ret + fi +} + +inst_script() { + local _ret + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"; then + return 0 + else + _ret=$? + derror FAILED: "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" + return $_ret + fi +} + +inst_fsck_help() { + local _ret _helper="/run/dracut/fsck/fsck_help_$1.txt" + if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" "$_helper"; then + return 0 + else + _ret=$? + derror "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" "$_helper" + return $_ret + fi +} + +# Use with form hostonly="$(optional_hostonly)" inst_xxxx <args> +# If hostonly mode is set to "strict", hostonly restrictions will still +# be applied, else will ignore hostonly mode and try to install all +# given modules. +optional_hostonly() { + if [[ $hostonly_mode == "strict" ]]; then + printf -- "%s" "$hostonly" + else + printf "" + fi +} + +mark_hostonly() { + for i in "$@"; do + echo "$i" >> "$initdir/lib/dracut/hostonly-files" + done +} + +# find symlinks linked to given library file +# $1 = library file +# Function searches for symlinks by stripping version numbers appended to +# library filename, checks if it points to the same target and finally +# prints the list of symlinks to stdout. +# +# Example: +# rev_lib_symlinks libfoo.so.8.1 +# output: libfoo.so.8 libfoo.so +# (Only if libfoo.so.8 and libfoo.so exists on host system.) +rev_lib_symlinks() { + local _fn + local _orig + local _links + + [[ ! $1 ]] && return 0 + + _fn="$1" + _orig="$(readlink -f "$1")" + _links=() + + [[ ${_fn} == *.so.* ]] || return 1 + + until [[ ${_fn##*.} == so ]]; do + _fn="${_fn%.*}" + [[ -L ${_fn} ]] && [[ $(readlink -f "${_fn}") == "${_orig}" ]] && _links+=("${_fn}") + done + + echo "${_links[*]}}" +} + +# attempt to install any programs specified in a udev rule +inst_rule_programs() { + local _prog _bin + + # shellcheck disable=SC2013 + for _prog in $(sed -nr 's/.*PROGRAM==?"([^ "]+).*/\1/p' "$1"); do + _bin="" + if [[ -x ${udevdir}/$_prog ]]; then + _bin="${udevdir}"/$_prog + elif [[ ${_prog/\$env\{/} == "$_prog" ]]; then + _bin=$(find_binary "$_prog") || { + dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found" + continue + } + fi + + [[ $_bin ]] && inst_binary "$_bin" + done + + # shellcheck disable=SC2013 + for _prog in $(sed -nr 's/.*RUN[+=]=?"([^ "]+).*/\1/p' "$1"); do + _bin="" + if [[ -x ${udevdir}/$_prog ]]; then + _bin=${udevdir}/$_prog + elif [[ ${_prog/\$env\{/} == "$_prog" ]] && [[ ${_prog} != "/sbin/initqueue" ]]; then + _bin=$(find_binary "$_prog") || { + dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found" + continue + } + fi + + [[ $_bin ]] && inst_binary "$_bin" + done + + # shellcheck disable=SC2013 + for _prog in $(sed -nr 's/.*IMPORT\{program\}==?"([^ "]+).*/\1/p' "$1"); do + _bin="" + if [[ -x ${udevdir}/$_prog ]]; then + _bin=${udevdir}/$_prog + elif [[ ${_prog/\$env\{/} == "$_prog" ]]; then + _bin=$(find_binary "$_prog") || { + dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found" + continue + } + fi + + [[ $_bin ]] && dracut_install "$_bin" + done +} + +# attempt to create any groups and users specified in a udev rule +inst_rule_group_owner() { + local i + + # shellcheck disable=SC2013 + for i in $(sed -nr 's/.*OWNER=?"([^ "]+).*/\1/p' "$1"); do + if ! grep -Eq "^$i:" "$initdir/etc/passwd" 2> /dev/null; then + grep -E "^$i:" "$dracutsysrootdir"/etc/passwd 2> /dev/null >> "$initdir/etc/passwd" + fi + done + + # shellcheck disable=SC2013 + for i in $(sed -nr 's/.*GROUP=?"([^ "]+).*/\1/p' "$1"); do + if ! grep -Eq "^$i:" "$initdir/etc/group" 2> /dev/null; then + grep -E "^$i:" "$dracutsysrootdir"/etc/group 2> /dev/null >> "$initdir/etc/group" + fi + done +} + +inst_rule_initqueue() { + if grep -q -F initqueue "$1"; then + dracut_need_initqueue + fi +} + +# udev rules always get installed in the same place, so +# create a function to install them to make life simpler. +inst_rules() { + local _target=/etc/udev/rules.d _rule _found + + inst_dir "${udevdir}/rules.d" + inst_dir "$_target" + for _rule in "$@"; do + if [ "${_rule#/}" = "$_rule" ]; then + for r in "$dracutsysrootdir${udevdir}/rules.d" ${hostonly:+"$dracutsysrootdir"/etc/udev/rules.d}; do + [[ -e $r/$_rule ]] || continue + _found="$r/$_rule" + inst_rule_programs "$_found" + inst_rule_group_owner "$_found" + inst_rule_initqueue "$_found" + inst_simple "$_found" + done + fi + for r in '' "$dracutsysrootdir$dracutbasedir/rules.d/"; do + # skip rules without an absolute path + [[ "${r}$_rule" != /* ]] && continue + [[ -f ${r}$_rule ]] || continue + _found="${r}$_rule" + inst_rule_programs "$_found" + inst_rule_group_owner "$_found" + inst_rule_initqueue "$_found" + inst_simple "$_found" "$_target/${_found##*/}" + done + [[ $_found ]] || ddebug "Skipping udev rule: $_rule" + done +} + +inst_rules_wildcard() { + local _target=/etc/udev/rules.d _rule _found + + inst_dir "${udevdir}/rules.d" + inst_dir "$_target" + for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1; do + [[ -e $_rule ]] || continue + inst_rule_programs "$_rule" + inst_rule_group_owner "$_rule" + inst_rule_initqueue "$_rule" + inst_simple "$_rule" + _found=$_rule + done + if [[ -n ${hostonly} ]]; then + for _rule in ${_target}/$1; do + [[ -f $_rule ]] || continue + inst_rule_programs "$_rule" + inst_rule_group_owner "$_rule" + inst_rule_initqueue "$_rule" + inst_simple "$_rule" + _found=$_rule + done + fi + [[ $_found ]] || ddebug "Skipping udev rule: $_rule" +} + +# make sure that library links are correct and up to date +build_ld_cache() { + for f in "$dracutsysrootdir"/etc/ld.so.conf "$dracutsysrootdir"/etc/ld.so.conf.d/*; do + [[ -f $f ]] && inst_simple "${f#"$dracutsysrootdir"}" + done + if ! $DRACUT_LDCONFIG -r "$initdir" -f /etc/ld.so.conf; then + if [[ $EUID == 0 ]]; then + derror "ldconfig exited ungracefully" + else + derror "ldconfig might need uid=0 (root) for chroot()" + fi + fi +} + +prepare_udev_rules() { + dwarn "prepare_udev_rules: deprecated and will be removed" + + if [ -z "$UDEVVERSION" ]; then + UDEVVERSION=$(udevadm --version) + export UDEVVERSION + fi + + if [ -z "$UDEVVERSION" ]; then + derror "Failed to detect udev version!" + return 1 + fi + if [ -z "${UDEVVERSION##*[!0-9]*}" ]; then + derror "udevadm --version did not report an integer, udev version cannot be determined!" + return 1 + fi + + for f in "$@"; do + f="${initdir}/etc/udev/rules.d/$f" + [ -e "$f" ] || continue + while read -r line || [ -n "$line" ]; do + if [ "${line%%IMPORT PATH_ID}" != "$line" ]; then + if ((UDEVVERSION >= 174)); then + printf '%sIMPORT{builtin}="path_id"\n' "${line%%IMPORT PATH_ID}" + else + printf '%sIMPORT{program}="path_id %%p"\n' "${line%%IMPORT PATH_ID}" + fi + elif [ "${line%%IMPORT BLKID}" != "$line" ]; then + if ((UDEVVERSION >= 176)); then + printf '%sIMPORT{builtin}="blkid"\n' "${line%%IMPORT BLKID}" + else + # shellcheck disable=SC2016 + printf '%sIMPORT{program}="/sbin/blkid -o udev -p $tempnode"\n' "${line%%IMPORT BLKID}" + fi + else + echo "$line" + fi + done < "${f}" > "${f}.new" + mv "${f}.new" "$f" + done +} + +# install function specialized for hooks +# $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook +# All hooks should be POSIX/SuS compliant, they will be sourced by init. +inst_hook() { + local hook + if ! [[ -f $3 ]]; then + dfatal "Cannot install a hook ($3) that does not exist." + dfatal "Aborting initrd creation." + exit 1 + elif ! [[ $hookdirs == *$1* ]]; then + dfatal "No such hook type $1. Aborting initrd creation." + exit 1 + fi + hook="/lib/dracut/hooks/${1}/${2}-${3##*/}" + inst_simple "$3" "$hook" + chmod u+x "$initdir/$hook" +} + +# install any of listed files +# +# If first argument is '-d' and second some destination path, first accessible +# source is installed into this path, otherwise it will installed in the same +# path as source. If none of listed files was installed, function return 1. +# On first successful installation it returns with 0 status. +# +# Example: +# +# inst_any -d /bin/foo /bin/bar /bin/baz +# +# Lets assume that /bin/baz exists, so it will be installed as /bin/foo in +# initramfs. +inst_any() { + local to f + + [[ $1 == '-d' ]] && to="$2" && shift 2 + + for f in "$@"; do + [[ -e $f ]] || continue + [[ $to ]] && inst "$f" "$to" && return 0 + inst "$f" && return 0 + done + + return 1 +} + +# inst_libdir_dir <dir> [<dir>...] +# Install a <dir> located on a lib directory to the initramfs image +inst_libdir_dir() { + local -a _dirs + for _dir in $libdirs; do + for _i in "$@"; do + for _d in "$dracutsysrootdir$_dir"/$_i; do + [[ -d $_d ]] && _dirs+=("${_d#"$dracutsysrootdir"}") + done + done + done + for _dir in "${_dirs[@]}"; do + inst_dir "$_dir" + done +} + +# inst_libdir_file [-n <pattern>] <file> [<file>...] +# Install a <file> located on a lib directory to the initramfs image +# -n <pattern> install matching files +inst_libdir_file() { + local -a _files + if [[ $1 == "-n" ]]; then + local _pattern=$2 + shift 2 + for _dir in $libdirs; do + for _i in "$@"; do + for _f in "$dracutsysrootdir$_dir"/$_i; do + [[ ${_f#"$dracutsysrootdir"} =~ $_pattern ]] || continue + [[ -e $_f ]] && _files+=("${_f#"$dracutsysrootdir"}") + done + done + done + else + for _dir in $libdirs; do + for _i in "$@"; do + for _f in "$dracutsysrootdir$_dir"/$_i; do + [[ -e $_f ]] && _files+=("${_f#"$dracutsysrootdir"}") + done + done + done + fi + [[ ${#_files[@]} -gt 0 ]] && inst_multiple "${_files[@]}" +} + +# get a command to decompress the given file +get_decompress_cmd() { + case "$1" in + *.gz) echo 'gzip -f -d' ;; + *.bz2) echo 'bzip2 -d' ;; + *.xz) echo 'xz -f -d' ;; + *.zst) echo 'zstd -f -d ' ;; + esac +} + +# install function decompressing the target and handling symlinks +# $@ = list of compressed (gz or bz2) files or symlinks pointing to such files +# +# Function install targets in the same paths inside overlay but decompressed +# and without extensions (.gz, .bz2). +inst_decompress() { + local _src _cmd + + for _src in "$@"; do + _cmd=$(get_decompress_cmd "${_src}") + [[ -z ${_cmd} ]] && return 1 + inst_simple "${_src}" + # Decompress with chosen tool. We assume that tool changes name e.g. + # from 'name.gz' to 'name'. + ${_cmd} "${initdir}${_src}" + done +} + +# It's similar to above, but if file is not compressed, performs standard +# install. +# $@ = list of files +inst_opt_decompress() { + local _src + + for _src in "$@"; do + inst_decompress "${_src}" || inst "${_src}" + done +} + +# module_check <dracut module> [<forced>] [<module path>] +# execute the check() function of module-setup.sh of <dracut module> +# or the "check" script, if module-setup.sh is not found +# "check $hostonly" is called +module_check() { + local _moddir=$3 + local _ret + local _forced=0 + local _hostonly=$hostonly + [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1") + [ $# -ge 2 ] && _forced=$2 + [[ -f $_moddir/module-setup.sh ]] || return 1 + unset check depends cmdline install installkernel + check() { true; } + # shellcheck disable=SC1090 + . "$_moddir"/module-setup.sh + is_func check || return 0 + [[ $_forced != 0 ]] && unset hostonly + # don't quote $hostonly to leave argument empty + # shellcheck disable=SC2086 + moddir="$_moddir" check $hostonly + _ret=$? + unset check depends cmdline install installkernel + hostonly=$_hostonly + return $_ret +} + +# module_check_mount <dracut module> [<module path>] +# execute the check() function of module-setup.sh of <dracut module> +# or the "check" script, if module-setup.sh is not found +# "mount_needs=1 check 0" is called +module_check_mount() { + local _moddir=$2 + local _ret + export mount_needs=1 + [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1") + [[ -f $_moddir/module-setup.sh ]] || return 1 + unset check depends cmdline install installkernel + check() { false; } + # shellcheck disable=SC1090 + . "$_moddir"/module-setup.sh + moddir=$_moddir check 0 + _ret=$? + unset check depends cmdline install installkernel + unset mount_needs + return "$_ret" +} + +# module_depends <dracut module> [<module path>] +# execute the depends() function of module-setup.sh of <dracut module> +# or the "depends" script, if module-setup.sh is not found +module_depends() { + local _moddir=$2 + local _ret + [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1") + [[ -f $_moddir/module-setup.sh ]] || return 1 + unset check depends cmdline install installkernel + depends() { true; } + # shellcheck disable=SC1090 + . "$_moddir"/module-setup.sh + moddir=$_moddir depends + _ret=$? + unset check depends cmdline install installkernel + return $_ret +} + +# module_cmdline <dracut module> [<module path>] +# execute the cmdline() function of module-setup.sh of <dracut module> +# or the "cmdline" script, if module-setup.sh is not found +module_cmdline() { + local _moddir=$2 + local _ret + [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1") + [[ -f $_moddir/module-setup.sh ]] || return 1 + unset check depends cmdline install installkernel + cmdline() { true; } + # shellcheck disable=SC1090 + . "$_moddir"/module-setup.sh + moddir="$_moddir" cmdline + _ret=$? + unset check depends cmdline install installkernel + return $_ret +} + +# module_install <dracut module> [<module path>] +# execute the install() function of module-setup.sh of <dracut module> +# or the "install" script, if module-setup.sh is not found +module_install() { + local _moddir=$2 + local _ret + [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1") + [[ -f $_moddir/module-setup.sh ]] || return 1 + unset check depends cmdline install installkernel + install() { true; } + # shellcheck disable=SC1090 + . "$_moddir"/module-setup.sh + moddir="$_moddir" install + _ret=$? + unset check depends cmdline install installkernel + return $_ret +} + +# module_installkernel <dracut module> [<module path>] +# execute the installkernel() function of module-setup.sh of <dracut module> +# or the "installkernel" script, if module-setup.sh is not found +module_installkernel() { + local _moddir=$2 + local _ret + [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1") + [[ -f $_moddir/module-setup.sh ]] || return 1 + unset check depends cmdline install installkernel + installkernel() { true; } + # shellcheck disable=SC1090 + . "$_moddir"/module-setup.sh + moddir="$_moddir" installkernel + _ret=$? + unset check depends cmdline install installkernel + return $_ret +} + +# check_mount <dracut module> [<use_as_dep>] [<module path>] +# check_mount checks, if a dracut module is needed for the given +# device and filesystem types in "${host_fs_types[@]}" +check_mount() { + local _mod=$1 + local _moddir=$3 + local _ret + local _moddep + + [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1") + [ "${#host_fs_types[@]}" -le 0 ] && return 1 + + # If we are already scheduled to be loaded, no need to check again. + [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0 + [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1 + + # This should never happen, but... + [[ -d $_moddir ]] || return 1 + + [[ $2 ]] || mods_checked_as_dep+=" $_mod " + + if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then + return 1 + fi + + if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then + module_check_mount "$_mod" "$_moddir" + _ret=$? + + # explicit module, so also accept _ret=255 + [[ $_ret == 0 || $_ret == 255 ]] || return 1 + else + # module not in our list + if [[ $dracutmodules == all ]]; then + # check, if we can and should install this module + module_check_mount "$_mod" "$_moddir" || return 1 + else + # skip this module + return 1 + fi + fi + + for _moddep in $(module_depends "$_mod" "$_moddir"); do + # handle deps as if they were manually added + [[ " $dracutmodules " == *\ $_mod\ * ]] \ + && [[ " $dracutmodules " != *\ $_moddep\ * ]] \ + && dracutmodules+=" $_moddep " + [[ " $add_dracutmodules " == *\ $_mod\ * ]] \ + && [[ " $add_dracutmodules " != *\ $_moddep\ * ]] \ + && add_dracutmodules+=" $_moddep " + [[ " $force_add_dracutmodules " == *\ $_mod\ * ]] \ + && [[ " $force_add_dracutmodules " != *\ $_moddep\ * ]] \ + && force_add_dracutmodules+=" $_moddep " + # if a module we depend on fail, fail also + if ! check_module "$_moddep"; then + derror "Module '$_mod' depends on '$_moddep', which can't be installed" + return 1 + fi + done + + [[ " $mods_to_load " == *\ $_mod\ * ]] \ + || mods_to_load+=" $_mod " + + return 0 +} + +# check_module <dracut module> [<use_as_dep>] [<module path>] +# check if a dracut module is to be used in the initramfs process +# if <use_as_dep> is set, then the process also keeps track +# that the modules were checked for the dependency tracking process +check_module() { + local _mod=$1 + local _moddir=$3 + local _ret + local _moddep + + [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1") + # If we are already scheduled to be loaded, no need to check again. + [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0 + [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1 + + # This should never happen, but... + [[ -d $_moddir ]] || return 1 + + [[ $2 ]] || mods_checked_as_dep+=" $_mod " + + if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then + ddebug "Module '$_mod' will not be installed, because it's in the list to be omitted!" + return 1 + fi + + if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then + if [[ " $dracutmodules $force_add_dracutmodules " == *\ $_mod\ * ]]; then + module_check "$_mod" 1 "$_moddir" + _ret=$? + else + module_check "$_mod" 0 "$_moddir" + _ret=$? + fi + # explicit module, so also accept _ret=255 + [[ $_ret == 0 || $_ret == 255 ]] || return 1 + else + # module not in our list + if [[ $dracutmodules == all ]]; then + # check, if we can and should install this module + module_check "$_mod" 0 "$_moddir" + _ret=$? + if [[ $_ret != 0 ]]; then + [[ $2 ]] && return 1 + [[ $_ret != 255 ]] && return 1 + fi + else + # skip this module + return 1 + fi + fi + + for _moddep in $(module_depends "$_mod" "$_moddir"); do + # handle deps as if they were manually added + [[ " $dracutmodules " == *\ $_mod\ * ]] \ + && [[ " $dracutmodules " != *\ $_moddep\ * ]] \ + && dracutmodules+=" $_moddep " + [[ " $add_dracutmodules " == *\ $_mod\ * ]] \ + && [[ " $add_dracutmodules " != *\ $_moddep\ * ]] \ + && add_dracutmodules+=" $_moddep " + [[ " $force_add_dracutmodules " == *\ $_mod\ * ]] \ + && [[ " $force_add_dracutmodules " != *\ $_moddep\ * ]] \ + && force_add_dracutmodules+=" $_moddep " + # if a module we depend on fail, fail also + if ! check_module "$_moddep"; then + derror "Module '$_mod' depends on '$_moddep', which can't be installed" + return 1 + fi + done + + [[ " $mods_to_load " == *\ $_mod\ * ]] \ + || mods_to_load+=" $_mod " + + return 0 +} + +# for_each_module_dir <func> +# execute "<func> <dracut module> 1 <module path>" +for_each_module_dir() { + local _modcheck + local _mod + local _moddir + local _func + local _reason + _func=$1 + for _moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do + [[ -e $_moddir/module-setup.sh ]] || continue + _mod=${_moddir##*/} + _mod=${_mod#[0-9][0-9]} + $_func "$_mod" 1 "$_moddir" + done + + # Report any missing dracut modules, the user has specified + _modcheck="$add_dracutmodules $force_add_dracutmodules" + [[ $dracutmodules != all ]] && _modcheck="$_modcheck $dracutmodules" + for _mod in $_modcheck; do + [[ " $mods_to_load " == *\ $_mod\ * ]] && continue + + [[ " $force_add_dracutmodules " != *\ $_mod\ * ]] \ + && [[ " $dracutmodules " != *\ $_mod\ * ]] \ + && [[ " $omit_dracutmodules " == *\ $_mod\ * ]] \ + && continue + + [[ -d $(echo "$dracutbasedir/modules.d"/[0-9][0-9]"$_mod") ]] \ + && _reason="installed" \ + || _reason="found" + derror "Module '$_mod' cannot be $_reason." + [[ " $force_add_dracutmodules " == *\ $_mod\ * ]] && exit 1 + [[ " $dracutmodules " == *\ $_mod\ * ]] && exit 1 + [[ " $add_dracutmodules " == *\ $_mod\ * ]] && exit 1 + done +} + +dracut_kernel_post() { + for _f in modules.builtin modules.builtin.alias modules.builtin.modinfo modules.order; do + [[ -e $srcmods/$_f ]] && inst_simple "$srcmods/$_f" "/lib/modules/$kernel/$_f" + done + + # generate module dependencies for the initrd + if [[ -d $initdir/lib/modules/$kernel ]] \ + && ! depmod -a -b "$initdir" "$kernel"; then + dfatal "\"depmod -a $kernel\" failed." + exit 1 + fi + +} + +instmods() { + # instmods [-c [-s]] <kernel module> [<kernel module> ... ] + # instmods [-c [-s]] <kernel subsystem> + # install kernel modules along with all their dependencies. + # <kernel subsystem> can be e.g. "=block" or "=drivers/usb/storage" + # -c check + # -s silent + local _optional="-o" + local _silent + local _ret + + [[ $no_kernel == yes ]] && return + + if [[ $1 == '-c' ]]; then + unset _optional + shift + fi + if [[ $1 == '-s' ]]; then + _silent=1 + shift + fi + + if (($# == 0)); then + read -r -d '' -a args + set -- "${args[@]}" + fi + + if (($# == 0)); then + return 0 + fi + + $DRACUT_INSTALL \ + ${initdir:+-D "$initdir"} \ + ${dracutsysrootdir:+-r "$dracutsysrootdir"} \ + ${loginstall:+-L "$loginstall"} \ + ${hostonly:+-H} \ + ${omit_drivers:+-N "$omit_drivers"} \ + ${srcmods:+--kerneldir "$srcmods"} \ + ${_optional:+-o} \ + ${_silent:+--silent} \ + -m "$@" + _ret=$? + + if ((_ret != 0)) && [[ -z $_silent ]]; then + derror "FAILED: " \ + "$DRACUT_INSTALL" \ + ${initdir:+-D "$initdir"} \ + ${dracutsysrootdir:+-r "$dracutsysrootdir"} \ + ${loginstall:+-L "$loginstall"} \ + ${hostonly:+-H} \ + ${omit_drivers:+-N "$omit_drivers"} \ + ${srcmods:+--kerneldir "$srcmods"} \ + ${_optional:+-o} \ + ${_silent:+--silent} \ + -m "$@" + fi + + [[ "$_optional" ]] && return 0 + return $_ret +} + +if [[ "$(ln --help)" == *--relative* ]]; then + ln_r() { + ln -sfnr "${initdir}/$1" "${initdir}/$2" + } +else + ln_r() { + local _source=$1 + local _dest=$2 + [[ -d ${_dest%/*} ]] && _dest=$(readlink -f "${_dest%/*}")/${_dest##*/} + ln -sfn -- "$(convert_abs_rel "${_dest}" "${_source}")" "${initdir}/${_dest}" + } +fi + +is_qemu_virtualized() { + # 0 if a virt environment was detected + # 1 if a virt environment could not be detected + # 255 if any error was encountered + if type -P systemd-detect-virt > /dev/null 2>&1; then + if ! vm=$(systemd-detect-virt --vm 2> /dev/null); then + return 255 + fi + [[ $vm == "qemu" ]] && return 0 + [[ $vm == "kvm" ]] && return 0 + [[ $vm == "bochs" ]] && return 0 + fi + + for i in /sys/class/dmi/id/*_vendor; do + [[ -f $i ]] || continue + read -r vendor < "$i" + [[ $vendor == "QEMU" ]] && return 0 + [[ $vendor == "Red Hat" ]] && return 0 + [[ $vendor == "Bochs" ]] && return 0 + done + return 1 +} |